uxcell 100pcs #4-40 0.197" Female Thread Brass Hex Nut Spacer Standoff Pillar Thread Size: 0.09"(2.385mm); Product Name: Hex Nut Spacer Material: Brass; Weight: 54g Package Content: 100pcs(+/-2%) x Hex Nut Spacer; Main Color: Silver Tone Height: 0.197"(5mm); Hex Size: 0.185"(4.7mm) Thread Pitch: 40/inch(0.635mm)